Clutch pulley or gear



(N0b Model.)

J. T. MEMS.

CLUTCH PULLEY 0R GEAR.

No. 306,274. Patented Oct. '7, 18842.

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UNITED STATES.

Parent* einen.

JOHN T. MEATS, OF TAUNTON, MASSACHUSETTS.

CLUTCH PULLEY OR GEAR.

.lCIl-ICATION forming part of Letters Patent No. 306,274, dated October 7, 1884.

Application tiled August Q5, 18S4. (No model.)

To all whom it rita/y concern:

Be it known that I, JOHN T. Mears, of Taunton, county of Bristol, State of Massachusetts, have invented an Improvement .in Clutch Pulley or Gear, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to simplify and improve the construction of clutch-pulleys.

The particular features in which my invention consists will be hereinafter fully set forth, and specified in the claims at the end of theA specification.

My improved clutch pulley or gear is 00ml` posed, essentially, ot" a driven body having a yielding hub, the body beingprovided With suitable projections to enter or slip out from notches in a toothed sleeve.

Figure l is a broken elevation of apulley or gear embodying my invention, theA body being shown as disengaged from the toothed sleeve, the teeth to form the gear being in dotted lines. Fig. 2 is a like elevation with the parts in clutch. Fig. 3 is a partial inner side view of my improved pulley or gear, and Fig. is a partial front View breken out to show the construction of the yielding parts of the hub ofthe body of the pulley or gear.

The shaft c has mounted upon it what lf denominate a toothed sleeve,7 composed, essentially, of a pinion or gear, b, having attached to it a disk or hub, b, provided with one or more notches, b2, into which may enter a projection, c, forming part of the driven body B, which may be a` pulley to receive a belt, or may have teeth, as shown by dotted lines, to be driven positively by another gear.

The body B has an attached hub, d, suitably notched .to receive fingers e of a collar, C, grooved to receive a spiral spring, f, the latter being thus interposed between the body part B and the collar O, the latter, in connection with the projection d and the spring, forming a yielding hub for the said body part.

The body part B and the collar O are kept upon the shaft u, by means oi" a nut, g, and a check-nut, h., turned upon the screw-threaded end ofthe said shaft The farther the said nuts are screwed upon the shaft the greater the compression of the spring and the con traction of the yielding hub, and consequently the greater the strain required to permit the projection o of the body part to slip out from engagement with the recess bt of the disk or plate b, or, in other words, the greater the strain to be exerted to permit the clutch pul ley or gear to slip with relation the one part to the other.

The clutch-pulley, or it may be a gear, is applicable for use in various machines.

, l claim 1. The clutch composed of the body part, the toothed sleeve, and the collar, and spring between it and the said body part, to operate substantially as described.l

2. The body part B, provided with the notched hub d, combined with the collar C, provided with the iingers,and with lthe spring j" interposed between them, substantially as described.

In testimony whereoi l have signed my name to this specification in the presence of two subseribing witnesses.

JOHN T. DIEATS.

XVitnesses:

G. W. GREGORY, J. H. LANGE. 

